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Title: WEIRD Vega 64 hashrate drop Post by: Hbks on December 23, 2017, 01:59:43 PM Hello guys,
To all of you who mine with Vega 64's, I noticed this weird hashrate drop - every time my screen goes off and I put it back on it drops from circa 1900h/s to circa 1700h/s and stays there. I have to restart miner in order to get back to 1900. I am 100% sure that is the case as I tested it many times, allowing it to go for like a day with my screen on and its all 1900 an average, then I'd just turn it off and on and it drops to 1700 immediately ??? Is is cast's soft issue Radeon drivers or what the hell! ? :D EDIT: IDK if that's of any importance but my rig is mainly RX560, plus that one Vega I just got to see if I want to replace 560's with Vega's, so basically since Cast does not support 560's I run them on Claymore v10.1 on the same rig simultaneously. Merry Xmass to y'all ! Title: Re: WEIRD Vega 64 hashrate drop Post by: laineux on December 23, 2017, 03:10:30 PM Hello
I think your GPU throttles because of high temperature. After restart, GPU gets colder and you hit max hashrate. Title: Re: WEIRD Vega 64 hashrate drop Post by: Hbks on December 23, 2017, 03:24:21 PM Hi, but look it can go for days without dropping the rate (only when my screen is kept ON constantly tho) it only drops when I turn my screen off and when I turn it back on I can see on it, that my rate dropped. It happens always when I turn it off manually or when I set it to 'go to sleep' in Windows power settings, once the time elapses and it puts itself to sleep the rate drops to 1700.
I have a relatively stable temp of 53-55C I temp fixed it by keeping my screen on all the time but it kinda bothers me since I sleep in the same room :D Title: Re: WEIRD Vega 64 hashrate drop Post by: laineux on December 23, 2017, 04:06:21 PM Ok
Strange and interesting too. I have never noticed hashrate depends on power on or off the screen Usually, when the CGU is active to display on screen, this one is less performant Title: Re: WEIRD Vega 64 hashrate drop Post by: Hbks on December 23, 2017, 04:20:55 PM Yeah,
To make it even more interesting, the screen is connected to motherboard GPU, and not to the ones I use for mining. Honestly I am out of ideas on this one. Title: Re: WEIRD Vega 64 hashrate drop Post by: bostonvex on December 23, 2017, 11:26:04 PM This issue has been discussed multiple times. Heres a recap:
Shirty AMD drivers...HBM craps out any time you remove a monitor or power save kicks in and various other undocumented reasons. Solution: Don't install Wattman Get HDMI dongles Use a hashrate monitoring script to - Disable GPUs - Enable GPUs - Set speed etc via OverdriveNtool - start Miner - monitor hashrate Script can be found here along with many other tips and tweaks: http://vega.miningguides.com/#Script (http://vega.miningguides.com/#Script) Title: Re: WEIRD Vega 64 hashrate drop Post by: Hbks on December 24, 2017, 11:56:11 AM Spot on Sir, thanks a lot!! This issue has been discussed multiple times. Heres a recap: Shirty AMD drivers...HBM craps out any time you remove a monitor or power save kicks in and various other undocumented reasons. Solution: Don't install Wattman Get HDMI dongles Use a hashrate monitoring script to - Disable GPUs - Enable GPUs - Set speed etc via OverdriveNtool - start Miner - monitor hashrate Script can be found here along with many other tips and tweaks: http://vega.miningguides.com/#Script (http://vega.miningguides.com/#Script) |